| 摘要 |
PROBLEM TO BE SOLVED: To improve wear resistance of a component subjected to repetitive collision and impact, such as a stopper, as much as possible, so that malfunction due to abrasion powder is less likely to occur, thereby enhancing durability and reliability.SOLUTION: As a material for a specific component, such as stoppers 46 and 47, that is directly exposed to a coolant and subjected to repetitive collision and impact, a material is used which is obtainable by using a resin having high hardness and chemical resistance (specifically, any one of PPS resin, PEEK resin, and PTFE resin) as a base material, and mixing, into the base material, a reinforcement material having lower hardness than the base material and having solid lubricating properties (specifically, carbon-based materials, such as carbon, graphite, and carbon fiber).SELECTED DRAWING: Figure 2 |
